13078078503 has 16 divisors (see below), whose sum is σ = 19939772160. Its totient is φ = 7468960896.

The previous prime is 13078078459. The next prime is 13078078589. The reversal of 13078078503 is 30587087031.

It is not a de Polignac number, because 13078078503 - 2¹⁰ = 13078077479 is a prime.

It is a super-2 number, since 2×13078078503² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13078078603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137913 + ... + 212546.

It is an arithmetic number, because the mean of its divisors is an integer number (1246235760).

Almost surely, 2^13078078503 is an apocalyptic number.

13078078503 is a deficient number, since it is larger than the sum of its proper divisors (6861693657).

13078078503 is a wasteful number, since it uses less digits than its factorization.

13078078503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352246.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 13078078503 in words is "thirteen billion, seventy-eight million, seventy-eight thousand, five hundred three".